---
path: /studio/yemaya/asset-pipeline
surface: studio
domain: yemaya
auth: signed-in + studio entitlement
source: apps/oshun/web/src/app/studio/yemaya/asset-pipeline/page.tsx
status: walked
last_walked:
  '2026-05-29 automated runtime walk (Playwright headless) — render, /v1 data
  (2xx), console/page-errors, expected content, screenshot verified; live
  screen-reader, touch, offline, and telemetry-delivery checks pending a manual
  AT pass. Evidence: WALKTHROUGH/results/runtime-sweep-2026-05-29.md; body
  re-derived 2026-06-03 from current source (lane-console architecture)'
---

# Studio · Yemaya · Asset Pipeline

## Purpose

Admin lane console that measures how completely a generation run covered a
course's required assets. It wires the real `@yemaya/asset-generation`
`calculateAssetCoverage` engine: given a course type + lesson count and the asset
types a run actually produced, it reads back the coverage percentage, the
still-missing asset types, and the per-type required-vs-generated counts.

## Entry points

- No breadcrumb panel on this page.
- Reachable from the Studio index and from the Asset Type Coverage quick-action.
- Embedded as the Asset Pipeline Lane inside the Asset Library aggregator
  (`/studio/yemaya/asset-library`).
- Direct URL / bookmark (signed-in + studio entitlement).

## Layout regions

`page.tsx` renders `ShellLayout active="studio"` and:

- **Workspace panel** (`StudioYemayaAssetPipelineWorkspace`,
  `data-yemaya-asset-pipeline-workspace`):
  - `<h1>` "Yemaya Asset Pipeline Workspace" (`WorkspaceHeading`).
  - Summary paragraph (`data-yemaya-asset-pipeline-summary`).
  - The coverage form lane (loading / unauthorized / error / ready-form /
    result, see States).
- **Route Map panel** (`data-yemaya-asset-pipeline-route-map`): `<h2>` "Route
  Map" + five `STUDIO_YEMAYA_ASSET_PIPELINE_ROUTE_MAP` entries.
- **Quick-action panel**: two `quickAction` links.

## States

- [ ] **Loading** — `data-yemaya-ap-loading` "Loading asset-coverage engine…"
      while the GET catalog fetch is in flight.
- [ ] **Unauthorized** — `data-yemaya-ap-unauthorized` "Access restricted." on a
      401/403 admin-scope failure (fail-closed).
- [ ] **Error** — `data-yemaya-ap-error` "Could not load the asset-coverage
      engine." on a non-OK / malformed catalog response.
- [ ] **Ready-form** — `data-yemaya-ap-form` rendered once the catalog
      (`courseTypes`) resolves.
- [ ] **Result** — `data-yemaya-ap-result` with `data-yemaya-ap-coverage`,
      `data-yemaya-ap-missing`, and a `data-yemaya-ap-by-type` list; or a
      validation message `data-yemaya-ap-coverage-error`.

## Interactions

### Coverage form (`data-yemaya-ap-form`)

- [ ] **Course type** — `select` `data-yemaya-ap-course-type` populated from
      `catalog.courseTypes`.
- [ ] **Lesson count** — `input` `data-yemaya-ap-lessons` (aria-label "lesson
      count"); must be a non-negative integer.
- [ ] **Generated asset types** — comma-separated `input`
      `data-yemaya-ap-generated` (aria-label "generated asset types").
- [ ] **Submit** — `button` `data-yemaya-ap-submit` "Measure coverage" → POST
      `/v1/admin/yemaya/asset-pipeline/coverage` with
      `{ courseType, lessonCount, generatedAssetTypes }`.

### Route map

`data-yemaya-asset-pipeline-route-map` — five entries:

- [ ] `/studio/yemaya/asset-pipeline`
- [ ] `/studio/yemaya/asset-pipeline/ingest/[ingestionJobId]`
- [ ] `/studio/yemaya/asset-pipeline/transform/[pipelineRunId]`
- [ ] `/studio/yemaya/asset-pipeline/quality-gates/[gateId]`
- [ ] `/studio/yemaya/asset-pipeline/publication/[releaseId]`

### Quick actions

- [ ] **"Open Yemaya Asset Type Coverage workspace"** →
      `/studio/yemaya/asset-type-coverage`.
- [ ] **"Back to Studio workspace index"** → `/studio`.

## Data & contracts

- **Reads**: GET `/v1/admin/yemaya/asset-pipeline` (catalog: `courseTypes`) on
  mount.
- **Writes**: POST `/v1/admin/yemaya/asset-pipeline/coverage`.
- **Realtime**: none.
- **Caching**: client fetch on mount, `cache: 'no-store'`,
  `buildBffAuthHeaders()`.
- **Auth/role check**: admin-scoped fail-closed (401/403 → unauthorized state)
  behind the proxy studio gate.

## Cross-references

- Studio overview: [`studio-overview.md`](../../studio-overview.md)
- Workspace source:
  `apps/oshun/web/src/components/studio/StudioYemayaAssetPipelineWorkspace.tsx`
- Route map source:
  `apps/oshun/web/src/components/studio/StudioYemayaAssetPipelineRouteMap.ts`
- Parent aggregator: [`studio-yemaya-asset-library.md`](./studio-yemaya-asset-library.md)
- Sibling Yemaya bridges: see folder index
- Feature spec: [`V1/features.md`](../../../../V1/features.md)

## Open questions / known gaps

- [ ] The Route Map advertises ingest / transform / quality-gates / publication
      sub-routes, but the live lane only exposes the coverage computation. Verify
      whether those staging surfaces are planned.